Artículo de Matt Ridley, enlazado por Arcadi Espada, sobre por qué prosperó la raza humana hace 45 000 años, el porqué del salto que se dio en esa época. La conclusión del artículo es que se debe a la suma de inteligencias de toda una comunidad, inteligencia colectiva, y al intercambio de esas ideas con otras comunidades, el comercio de ideas.
Cuando lo leo me parece muy coherente, racional y convincente.
Destaco estos párrafos:
"The answer lies in a new idea, borrowed from economics, known as collective intelligence: the notion that what determines the inventiveness and rate of cultural change of a population is the amount of interaction between individuals.
But the sophistication of the modern world lies not in individual intelligence or imagination. It is a collective enterprise. Nobody—literally nobody—knows how to make the pencil on my desk (as the economist Leonard Read once pointed out), let alone the computer on which I am writing. The knowledge of how to design, mine, fell, extract, synthesize, combine, manufacture and market these things is fragmented among thousands, sometimes millions of heads. Once human progress started, it was no longer limited by the size of human brains. Intelligence became collective and cumulative.
We tend to forget that trade and urbanization are the grand stimuli to invention, far more important than governments, money or individual genius. It is no coincidence that trade-obsessed cities—Tyre, Athens, Alexandria, Baghdad, Pisa, Amsterdam, London, Hong Kong, New York, Tokyo, San Francisco—are the places where invention and discovery happened. Think of them as well-endowed collective brains.
It is precisely the same in cultural evolution. Trade is to culture as sex is to biology. Exchange makes cultural change collective and cumulative. It becomes possible to draw upon inventions made throughout society, not just in your neighborhood. The rate of cultural and economic progress depends on the rate at which ideas are having sex.
Once human beings started swapping things and thoughts, they stumbled upon divisions of labor, in which specialization led to mutually beneficial collective knowledge. Specialization is the means by which exchange encourages innovation: In getting better at making your product or delivering your service, you come up with new tools. The story of the human race has been a gradual spread of specialization and exchange ever since: Prosperity consists of getting more and more narrow in what you make and more and more diverse in what you buy. Self-sufficiency—subsistence—is poverty.
Where population falls or is fragmented, cultural evolution may actually regress. A telling example comes from Tasmania, where people who had been making bone tools, clothing and fishing equipment for 25,000 years gradually gave these up after being isolated by rising sea levels 10,000 years ago. Joe Henrich of the University of British Columbia argues that the population of 4,000 Tasmanians on the island constituted too small a collective brain to sustain, let alone improve, the existing technology.
Why it happened in Africa remains a puzzle, but Steve Kuhn and Mary Stiner of the University of Arizona have argued that for some reason only Africans had invented a sexual division of labor between male hunters and female gatherers—the most basic of all trades.
There's a cheery modern lesson in this theory about ancient events. Given that progress is inexorable, cumulative and collective if human beings exchange and specialize, then globalization and the Internet are bound to ensure furious economic progress in the coming century—despite the usual setbacks from recessions, wars, spendthrift governments and natural disasters.
The process of cumulative innovation that has doubled life span, cut child mortality by three-quarters and multiplied per capita income ninefold—world-wide—in little more than a century is driven by ideas having sex. And things like the search engine, the mobile phone and container shipping just made ideas a whole lot more promiscuous still".